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1 - x + 2/3 > 4x / *3
3 - 3x + 2 > 12x
-3x - 12x > -3 -2
-15x > -5 /:(-15)
x < 5/15
x < 1/3
b)
5x - 1/2 ≤ 6 - x/5 /*10
50x - 5 ≤ 60 - 2x
50x + 2x ≤ 60 + 5
52x ≤ 65 /:52
x ≤ 65/52
x ≤ 5/4